Cut-out for automobiles.



P. F. MARA.

CUT-OUT FOR AUTOMOBILES. APPLICATION FILED MAY22.19I5.

Patentd Feb. 27;, 1917.

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PATRICK F. ma l, or DANVERS, rumors.

' cur-our F03 AUTOMOBILES.

Specification of LettersPatent.

Application filed May 22, 1915. Serial No. 29,876.

To all whom it may concern: I

Be it known that I, PATRICK F. MARA, a citizen of the United States, residing at Dan vers, in the county of McLeanand State of Illinois, have invented new and usefullmprovements in Cut-Outs for Automobiles, of

which the following is a specification. i This invention relates to cut-outs for automobiles, motor cars and the like, the object in view being to do away with the present chain and pulley connections for operating the cut-out in the exhaust pipe of the engine and the troubles incident to the use thereof such as the wearing out of the chain and the binding of the chain on the pulleys, and to utilize in place thereof lever and spring connections which afford a practical control for the cut-out and which are not subject to wear, displacement and dislocation as in the case of the present day cut-out operating mechanism. v I

With the above and other objects in view,

the invention consists in the novel construction, combination and arrangement of parts, as herein described, illustrated and claimed.

In the accompanying drawings:- Figure 1 is a bottom plan view of a suflicient part of a motorcar to illustrate the application of the present inventionthereto.

Fig. 2 is a side elevation'partly in longitudinal section of the same.

Referring to the drawings A generally designates the body of a motorcar and'2' a portion of ble after leaving the combustion chamber or chambers of the engine. 8 designates a disk-shaped valve which forms the cut-out proper, said valve being mounted in a T- shaped tubular extension 9 of the section of the exhaust pipe in which the cut-out is mounted. The disk-shaped valve or cutout proper comprises a shaft or a stem 10' the chassis thereof,3 designating the drivers seat, 1 the front platformor.

ine of the car and 6 the exhaust pipe which which is journaled at diametrically opposite points the extension 9 of the exhaust pipe, said shaft or stem extending laterally and projecting beyond one side of said section where it has'mounted fast'thereon an 'operating arm 11.

The operating arm 11"is provided adj acent 'tofitjsextremlty with a hole 12 in which is received one extremity of a coiledcontrad tile spring 13, theopposite extremity of said 'springbeing connected to a fixed point 14.

Arranged in rear of the cut-out is a lever 15 which is fulcrumed*between its ends and aboutcentrally thereof on a pivot 16 which connects said lever to a support or hanger 17 which is'bifurcated as shown to provide opposite portions between which the lever is placed and through which the pivot passes. The support 17 is mounted at its rear end on a vertical pivot 18 which allows the forward extremity of said' support to swing laterally. v A link 19 connects one arm of the Patented Feb. 27,1917.

lever 15 with the operating arm 11' of the cut-out. Another link 20-connects the other arm of the lever 15 with the pendant arm 21 of a pedal 22 which is pivotally mounted at 23 in the floor in'a'dvance of the operators seat.

It will now be understood that when the operator desires to open the cut-out and allow a free exhaust directlyzto the atmosphere, it is only necessary for him to depress the pedal. whereuponthe lever 15 is rocked 1 so as to pull on the operating arm 11 ofthe cut-out.- The cut-out isthus held open as long as the operator presses against the pedal. When he releases the pedal by lifting his foot therefrom, the spring 13 acting I on the'operatin'g arm'll of the cut-out, returns said cut-out to its closedposition. The

lever 15 in connection with the support 17 acts as an equalizer so as to properly apply a pulling strain on the operating arm of the cut-out, the arrangement as a whole also avoiding lost motionbetween the several elements and thereby preventing rattling of the parts, thespring 13 serving to hold the entire operating mechanism under tension.

Furthermore, the parts, under the arrangement and construction descrlbed, are notsusceptible to rapid wear as in the case of the present day chain or cable and pulley arrangement' and furthermore, there is no chain or other flexible connection to become jammed in thegulding pulley or pulleys around Which it passes after leaving the operating pedal and before reaching the cutout. 7 V

What I claim is The combination With a motor car chassis,

an engine mounted on the forward end thereof, an exhaust pipe leading r'ea'rwardly' from sald engine, and a muffler associated With said exhaust pipe, of a cut-out for said pipe located adjacent to the engine, an operating arm for opening and closing said cutout, a spring attached at one end to said operating arm extending forwardly there from and attached atits forWardend to a fixed point, a hanger pivotally mounted at Copies of this patent may be obtained for neoting said pedal to the other arm of said lever, the latter being located in rear of both the out out arm and foot pedal.

In testimony whereof I afliX my signature in presence of tWo Witnesses.

PATRICK F. MAR-A.

Witnesses:

Dr. F. J. PARKHURs'r, CHAS. C. LAMBDIN.

five cents each, by addressing the".(lommiss ioner of Patents, Washington, 11.0. 

